import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JTree;
import java.awt.Rectangle;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JPanel;
 
public class Frame1 extends JFrame {
    BorderLayout borderLayout1 = new BorderLayout();
    JButton jButton1 = new JButton();
    JTree jTree1 = new JTree();
    JSplitPane jSplitPane1 = new JSplitPane();
    JPanel jPanel1 = new JPanel();
 
 
    public Frame1() {
        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }
 
    private void jbInit() throws Exception {
        getContentPane().setLayout(null);
        setBounds(0,0,500,800);
 
 
       // jButton1.addActionListener(new Frame1_jButton1_actionAdapter(this));
 
        jTree1.setBounds(new Rectangle(4, 31, 106, 129));
        jSplitPane1.setBounds(new Rectangle(17, 168, 179, 25));
        jPanel1.setBounds(new Rectangle(0, 9, 218, 210));
        this.add(new JScrollPane(jTree1), BorderLayout.CENTER);
 
   //jTree1.expandRow(1);
   jTree1.setScrollsOnExpand(false);
//  this.getContentPane().add(new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,new JScrollPane(new JTree()),new JPanel()));  
       // this.getContentPane().add(jScrollPane1);
        this.getContentPane().add(jTree1);
        this.getContentPane().add(jSplitPane1);
        this.getContentPane().add(jPanel1);
        //  this.getContentPane().add(jScrollBar1);
      //  jScrollBar1.setBounds(new Rectangle(227, 102, 17, 129));
          setVisible(true);
    }
 
    public static void main(String[] args) {
        Frame1 frame1 = new Frame1();
    }
 
    public void jButton1_actionPerformed(ActionEvent e) {
 
    }
}

qTree = new JTree(....);
 
qPane = new JScrollPane(qTree,
      JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
      JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
 
contentPane.add(qPane...);

public class Frame1 extends JFrame {
    BorderLayout borderLayout1 = new BorderLayout();
    JButton jButton1 = new JButton();
    String h[]= {"DD","d","DD","d","DD","d","DD","d","DD","d","DD","d","DD","d","F"};
    JTree jTree1 = new JTree(h);
    JSplitPane jSplitPane1 = new JSplitPane();
    JPanel jPanel1 = new JPanel();
    JScrollPane jScrollPane1 = new JScrollPane();